Porovnání fotosyntetické indukce a přechodových limitací během indukční fáze v mladých a dospělých listech tří klonů topolů

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67179843%3A_____%2F08%3A00309520" target="_blank" >RIV/67179843:_____/08:00309520 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of photosynthetic induction and transient limitations during the induction phase in young and mature leaves from three poplar clones

Popis výsledku v původním jazyce

We tested the hypothesis that leaf age affects photosynthetic induction. Photosynthetic inductions were investigated in young and mature leaves, defined by leaf plastochron index 3?5 and 10?14, from 3 poplar clones: Populus alba, nigra and euramericana.Maximum assimilation rates and stomatal conductance were higher in young leaves than in mature leaves. The clones with high photosynthetic capacity had low induction states 60s after leaf illumination (IS60), and required less time to reach 90% photosynthetic induction (T90). Young leaves exhibited a lower transient stomatal limitation than mature leaves. The time constant of Rubisco activation (?) was significantly higher in mature leaves of P. alba; whereas there were no differences in the other clones. Our hypothesis was confirmed for transient stomatal limitation; however, for the induction parameters IS60, T90 and ?, photosynthetic induction was more clone-specific and was dependent on leaf age only in some cases.

Název v anglickém jazyce

Comparison of photosynthetic induction and transient limitations during the induction phase in young and mature leaves from three poplar clones

Popis výsledku anglicky

We tested the hypothesis that leaf age affects photosynthetic induction. Photosynthetic inductions were investigated in young and mature leaves, defined by leaf plastochron index 3?5 and 10?14, from 3 poplar clones: Populus alba, nigra and euramericana.Maximum assimilation rates and stomatal conductance were higher in young leaves than in mature leaves. The clones with high photosynthetic capacity had low induction states 60s after leaf illumination (IS60), and required less time to reach 90% photosynthetic induction (T90). Young leaves exhibited a lower transient stomatal limitation than mature leaves. The time constant of Rubisco activation (?) was significantly higher in mature leaves of P. alba; whereas there were no differences in the other clones. Our hypothesis was confirmed for transient stomatal limitation; however, for the induction parameters IS60, T90 and ?, photosynthetic induction was more clone-specific and was dependent on leaf age only in some cases.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

ED - Fyziologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Tree Physiology

ISSN

0829-318X

e-ISSN

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Svazek periodika

28

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

CA - Kanada

Počet stran výsledku

9

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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